问题
填空题
All those left undone may sound great in theory, but even the truest believer has great difficulty ______________ (当谈到具体问题时).
答案
参考答案：when it comes to specifies
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All those left undone may sound great in theory, but even the truest believer has great difficulty ______________ (当谈到具体问题时).
参考答案：when it comes to specifies
